Acknowledges watchdog IRQ after handled or kernel keeps receiving the
interrupt.
Fixes: fd0b6c1ff85a ("remoteproc/mediatek: Add support for mt8192 SCP")
Signed-off-by: Tzung-Bi Shih <tzungbi@xxxxxxxxxx>
---
drivers/remoteproc/mtk_common.h | 1 +
drivers/remoteproc/mtk_scp.c | 20 +++++++++++---------
2 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
index 988edb4977c3..bcab38511bf3 100644
--- a/drivers/remoteproc/mtk_common.h
+++ b/drivers/remoteproc/mtk_common.h
@@ -47,6 +47,7 @@
#define MT8192_CORE0_SW_RSTN_CLR 0x10000
#define MT8192_CORE0_SW_RSTN_SET 0x10004
+#define MT8192_CORE0_WDT_IRQ 0x10030
#define MT8192_CORE0_WDT_CFG 0x10034
#define SCP_FW_VER_LEN 32
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index e0c235690361..eba825b46696 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -197,17 +197,19 @@ static void mt8192_scp_irq_handler(struct mtk_scp *scp)
scp_to_host = readl(scp->reg_base + MT8192_SCP2APMCU_IPC_SET);
- if (scp_to_host & MT8192_SCP_IPC_INT_BIT)
+ if (scp_to_host & MT8192_SCP_IPC_INT_BIT) {
scp_ipi_handler(scp);
- else
- scp_wdt_handler(scp, scp_to_host);
- /*
- * SCP won't send another interrupt until we clear
- * MT8192_SCP2APMCU_IPC.
- */
- writel(MT8192_SCP_IPC_INT_BIT,
- scp->reg_base + MT8192_SCP2APMCU_IPC_CLR);
+ /*
+ * SCP won't send another interrupt until we clear
+ * MT8192_SCP2APMCU_IPC.
+ */
+ writel(MT8192_SCP_IPC_INT_BIT,
+ scp->reg_base + MT8192_SCP2APMCU_IPC_CLR);
+ } else {
+ scp_wdt_handler(scp, scp_to_host);
+ writel(1, scp->reg_base + MT8192_CORE0_WDT_IRQ);
+ }
}
static irqreturn_t scp_irq_handler(int irq, void *priv)
--
2.30.0.280.ga3ce27912f-goog
